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安乐蜥两个近缘物种之间的自然杂交:染色体细胞学

Natural hybridization between two sibling species of Anolis lizards: chromosome cytology.

作者信息

Gorman G C, Atkins L

出版信息

Science. 1968 Mar 22;159(3821):1358-60. doi: 10.1126/science.159.3821.1358.

DOI:10.1126/science.159.3821.1358
PMID:5644262
Abstract

The Lesser Antillean lizards Anolis trinitatis and Anolis aenous were both apparently introduced to Trinidad where they are hybridizing. The parental species have 36 and 34 chromosomes, respectively. Hybrids have 35 chromosomes. Meiosis in hybrids is abnormal. There is an accumulation of cells at metaphase I, and poor homolog pairing, characterized by a low frequency of chiasmata and numerous univalents.

摘要

小安的列斯群岛蜥蜴物种翠绿安乐蜥和铜色安乐蜥显然都被引入了特立尼达岛,它们正在那里杂交。亲本物种分别有36条和34条染色体。杂交后代有35条染色体。杂交后代的减数分裂是异常的。在中期I有细胞积累,同源染色体配对不佳,表现为交叉频率低和大量单价体。

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